The invention concerns a process for recovering at least one rare earth metal (REM) from the group of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu. A chloride salt melt is provided and aluminium chloride is used to chlorinate a REMcontaining resource. The REM can be recovered by electrolysis, vaporisation or hydrometallurgical methods.

The invention relates to a method for the extraction of vanadium from various sources in the form of vanadiumpentoxide, V_(2)O_(5), from a source containing vanadium. The method includes the steps of: providing a source of V_(2)O_(5), heating the source to a temperature of at least 1000 C., evaporating V_(2)O_(5 )from the heated source and recovering the evaporated V_(2)O_(5).

Method for producing nano sized ferrite particles from a metallurgical slag, the method including the steps of: a) providing a ladle with a molten slag including CaO, SiO2, FeO, and at least one of MnO, Cr2O3, V2O3. b) oxidizing the slag at a temperature in the interval of 1573K-1773K (1300-1500 C.) for 10-90 minutes, c) removing at least a portion of the slag from the ladle d) cooling the removed slag portion to a temperature below 373K (100 C.), e) extracting nano sized manganese ferrite and/or chromium ferrite and/or vanadium ferrite particles from the cooled portion.